Actor Victor Izay is credited for playing William Mulholland, but does not appear in the "Mind-Sifter" story. He appears in the Visual Effects Easter Eggs" segment by Pony R. Horton that is tagged onto Mind-Sifter on the online version. Horton directed a documentary called "A Test of Integrity" in 2003, which features Izay as Mulholland and Rick Gallaher (also seen but not credited) as a Times Reporter. The documentary still remains unfinished, but a segment is featured in the VFX Easter Eggs.